Incandescent-gas-lamp bulb.



PATENTED FEB. 12, 1907.

I G. M. LUNGREN. INCANDBSGENT GAS LAMP BULB.

APPLICATION FILED MAB. 28.1905.

3 SHEETS-SHEET 1.

C IN E/VTOR ATTORNEYS WITNESSES: 6% 8.

THE NORRIS PETERS cm, WASHINGTDN, n.

G. M. LUNGREN; v

INOANDESOENT GAS LAMP BULB. APPLICATION FILED MAR. 28,1905.

3 SHEETS-SHEET 2.

WITNESSES: l/V Eli/TOR Tn: rmRRIs Psrsns 60-, WASHINGTON, D. c.

PATBNTED FEB. 12, 1907.

0.- M. LUNGREN. INGANDESGENT GAS LAMP BULB.

APPLICATION FILED MAR. 28.1905.

3 SHEETS-SHEET 3- Illllll IILM WW 7, llllllllllF/{Efl Cam. lI/E/VYOR I10 WITNESSES:

ATORNEYS THE Mofms PETERS ca, WASHINGTON, n. c.

CHARLES M. LUNGREN, OF BAYONNE,

NEW JERSEY, ASSIGNOR TO THE SAFETY CAR HEATING & LIGHTING COMPANY, ACORPORATION OF NEW JERSEY.

INCANDESCENT-GAS-LAMP BULB.

Specification of Letters Patent.

Patented Feb. 12, 1907.

Application filed March 28, 1905. Serial No. 252,606.

To a. lull/07721 it Duty concern/.-

Be it known that 1, CHARLES M. LUNGREN, residing at Bayonne, in thecounty of Hudson and tate of New Jersey, have invented certain new anduseful Improvements in Incandescent-Gas-Lamp Bulb, of which thefollowing is a full, clear, and exact description, such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention relates to gas-lamps and the like, and more specificallyto illuminating devices of this general type adapted for use inconnection with car-lighting systems.

One of the objects thereof is to provide a device of the above typecharacterized by increased e'l'liciency, simplicity, and convenience.

Another object is to provide a device of the above type in which theglobe, mantle, and associated parts may readily be detached or placed inposition as a whole, with the chances of injury to the parts reduced toa minimum.

Another object is to provide a device of the type last above mentionedin which either the globe alone or the globe with the mantle is at willreadily detachable.

Another object is to provide a practicable device of the above type inwhich rattling at the joints between the relatively detachable parts isobviated.

Other objects will be in part obvious and in part pointed outhereinafter.

The invention accordingly consists in the features of construction,combinations of ele ments, and arrangement of parts which will beexemplified in the device hereinafter described and the scope of theapplication of which will be indicated in the following claims.

In the accompanying drawings, wherein are shown one or more embodimentsof the several features of my invention, Figure 1 is a sectionalelevation of an ineandecent gaslamp. Fig. 2 is a similar view of thelower portion of a lamp-globe of different form. Fig. 3 is a sectionaldetail view of a part shown in Fig. 1. Fig. 4 is a plan of the same.Fig. 5 is a sec 'onal elevation of certain parts shown in Fig. 1, thesame appearing isolated from the ccacting members. Fig. 6 is a sectionalelevation of a slightly-different form of gas lamp. Fig. 7 is a detailview showing l i l j l l l l l certain parts appearing in Fig. 1 inanother position.

Similar reference characters refer to similar parts throughout theseveral views.

As tending to render better understood certain features of my inventionit may here be noted that in gas-lamps employing what is commonly knownas an incandescent mantle the latter part is, on account of its fragilenature, often broken while being mounted upon aburner. The frequency ofthis occurrence is increased owing to the fact that it is generallyimpracticable to employ skilled labor to place these parts in positionand with the ordinary type of incandescent gas-lamp the harsh use towhich the mantle is thus subjected often proves disastrous. Moreover, Ihave found that it is frequently desirable to remove the globe, as forcleaning or replacing the same, and that in such treatment, with theordinary type of lamp, the mantle is frequently broken, either through adirect blow or through the excessive jarring or shock to which it issubjected. I have also found that when incandescent lamps are employed.in car-lighting systems, to which use my inventi on is peculiarlyadapted, the rattling of the parts on account of the vibration andjarring of a moving train is not only a constant source of annoyance,but is likely at any time to cause the breaking or chipping of theglobe. The above and other defects are remedied 'n constructions of thenature of that hereinafter described.

Referring now to Fig. 1 of the drawings, there is shown at 1 a conduithaving fixed thereon a casing 2 for a purpose hereinafter described. Thelower end of conduit 1 or gas-nozzle, as this part may be termed, ispreferably provided with. a coarse rolled thread adapted to coact with asimilar thread formed upon the sleeve-like portion 3 of what may betermed a spider 4. It may here be noted that by the term gas-nozzle, asused throughout this specification and the following claims,is meant apart adapted to discharge gas in condition for use for illuminatingpurposes that is, gas which is in condition to be burned without furthermixing with air or other treatment. This member, as shown more clearlyin Figs. 3 and 4 of the drawings, comprises the arms 5, connecting thesleeve 3 with a ring 6, having a downwardly-turned lip or flange 7,preferably provided with a coarse thread for a purpose hereinafterdescribed. Secured to the supporting member or spider 4 is a translucentglobe 8, which may be of any desired shape. It may here be noted thatthe term globe is used throughout this specification and the followingclaims in a broad sense as denoting any member adapted to be used inconjunction with a source of light to protect the same, aid incombustion, or affect the quantity or distribution of the light emitted.Globe 8 is rigidly and yet detaehably secured to the downwardly-turnedlip 7, preferably by means of a metallic band 9, cemented, as shown at10, to theupper portion ofthe globe. This band, as shown in Fig. 5 ofthe drawings,

is preferably provided with a number of slots,

or cuts 11 and is formed of resilient material in such manner as to tendto spring out and firmly engage the coacting lip 7. Mounted upon thesleeve 3 of spider 4 is what may be termed a spool 12, having securedthereto a pendent mantle 13, adapted to coact with the gas-nozzle formedon conduit 1. Spool 12 is preferably threaded upon its inner surface, soas to engage with the threaded outer surface of the sleeve. By thusmounting the mantle upon the gas-nozzle, as above dofined, it is incondition to coact with gas discharged thereby without necessity for theinterposition of mixing means or other devices. Secured to or formedabout the casing 2 is a ring 14, provided with an outwardly-projectingflange l5, perforated as shownat 16 and 1.7. Pivotally mounted upon thisring is a latch 18, the downwardly-projecting end 19 of which is forcedinto its lowermost position by means of spring 20, this position beingdetermined by a stop 21. The latch 18 is adapted to pass through theperforation 17, and formed in the ring 6 is a corresponding opening 22,adapted in certain positions of the spider to register with perforation17. The casing 2 is perforated, as shown at 23 and 24, in order topermit a free circulation of air, which in this illustrative embodimententers through perforations 16 and passes between the spider-arms 5, asindicated by the arrows, and circulates around the mantle 13, passingout through the openings 24 and 23. It will readily be seen that in thismanner a free circulation is provided and the desired amount ofcombustion is fully provided for and yet substantially no lightpermitted to escape without passing through the globe.

It may here be noted that by the expres sion detachable connection, asused throughout the following claims, is meant a connection between twoparts such that the same are readily detachable, and by the terminoperative, as used in connection such connection wherein thedetachability of these parts is restricted.

The operation of the above-described em bodiment of my invention is asfollows: Assuming that the parts are in their assembled condition and itbe desired to detach the globe, together with the mantle and the partscon necting these members, the globe is merely turned relative to theconduit 1 or equivalent part, the spider 4 thus being turned about thegas-nozzle, and the entire globe spider, and mantle, or bulb, as thesemembers may be collectively termed, is detached. Under thesecircumstances no relative movement takes place between the spider andthe globe, inasmuch as the joint between the lip 7 and the band 9 is sotight as to hold these parts in fixed position, while the spider isturned about the conduit 1. This result is accomplished by virtue of theextreme pressure between these members by reason of the fact that thecontacting surfaces thereof are considerably greater or that thedistance from the axis of rotation exceeds that in the case of the ointbetween the spider and the gas-nozzle, any one of these factors beingadapted to accomplish the desired result, but their combined effectrendering this action more certain. With the bulb detached, using theterm as above described, a new bulb may be placed in position, with thechances of injury to the mantle reduced to a minimum.

The above method of operation is under the assumption that the parts arein the relative positions indicated inFig. 7 or that the latch 18 hasbeen raised. If it be desired to remove the globe alone, as for purposesof cleaning, assuming, as will generally be the case, that the globebecomes soiled or clouded during the lifetime of the mantle, the latch18 is left in looking position, in which it is snapped downwardly intothe perforation 17 in the spider. The globe is then unscrewed, rotarymovement of the spider being pre vented by the latch 18 and the globealone, if the thread be formed upon the globe, or, in the constructionshown, the globe with the band 9, is removed from the lamp. The globemay then be cleansed upon both its inner and outer surfaces. The globeis then again turned into its assembled position within the lip 7, asshown in Fig. 1.

It is intended in the preferred method of using embodiments of myinvention that the bulbs will constitute separate articles ofmanufacture, as is at present the case with similar devices inelectric-lighting systems, and that the same will be shipped in the formindicated in Fig. 5 of the drawings and used as separate units inconnection with the lighting systems wherein they are installed. Thus ifany of the parts of a bulb become with this expression, is meant thestate of 1 damaged so as to render the same inoperative it is removed byturning about the gas- I the shield 33, and resting about the lowernozzle and discarded, returned to the factory, or any other desireddisposition made of the same. A new bulb is then placed in position, thesame being mounted upon the gasnozzle merely by turning it about thesame until it rests against the flange 15 and is locked in' position bythe latch 18.

It will thus be seen that I have provided a simple and efficient devicewell adapted to accomplish the objects of this invention. The severalparts are of simple and inexpensive construction and yet durable andellicient in action. Moreover, this device may be employed in connectionwith lighting systems now in use, slight alterations of the parts onlybeing necessary. By means of a device of the above nature the chances ofinjury to the mantle are reduced to a minimum in the placing of the samein position, during shipping or storage thereof, or when the globe isremoved. It will also be seen that by means of my invention thenecessity for any handling of the mantle by unskilled labor is entirelydone away with, as in the preferred method of using embodiments thereofthe parts comprising the individual bulb are assembled at the factoryand, excepting in the case of cleaning the globe, these parts arethereafter ban .l d as a unit. In fact, the entire device stands in asimilar relation to gas-lighting systems to the relation of theincandescent-clectric-lamp bulb to systems of electric lighting andpossesses many of the characteristic advantages of the last-mentioneddevice. It will also be seen that the bulb by reason of its mountingadjacent the gas-nozzle may be of the cheapest and most comp ctconstruction, as no mixing means thus required to be either formed uponthe bulb and ti us attached and detached therewith or necessarilyinterposed between the point of attachment of the same and the mantle.

In Fig. 2 of the drawings is shown a slightly different form of globe25, which is open to the air, as shown at 26, thus providing a freedraft, but sacrificing some of the advantages oi' the construction.above described. A

In Fig. 6 is shown another embodiment of certain features of myinvention, in which 27 represents a casing or chamber adapted to besecured directly to a gas-conduit, as shown at 28. The casing 27, whichis provided with a suitable deflector 29, has tapped within its lowerportion a gas-nozzle 30, this latter part supporting a sieve or screen31 in a position adapted to perform its well-known functions. Secured tothe lower surface of the casing 27, as by means of screws 32, is a ringor shield 33, having secured within its outer flange 34, as by means ofset-screws 35, a globe 36. An annular support 37 is mounted beneathportions thereof is a threaded lip 38, formed upon what may be termed aspider 39, the lower portion of which has a threaded connection with thegas-nozzle 40. A mantle ll is mounted about gasnozzle 40 in a mannersubstantially identical with that of the mantle mounting previouslydescribed. Threaded upon the upper lip of the spider 09 is a band 42,cemented, as shown at 43, about an inner globe 44.-

The method of use of the last-described embodiment should be largelyobvious from the above description thereof, taken in connection withthat relating to the embodiment first described.

Several of the advantages of the firstde scribed embodiment are inherentin these later set forth.

As many changes could be made in the above construction and manyapparently widely different embodiments of my invention could be manewithout departing from the scope thereof, I intend that all mattercontained in the above description or shown in the accoin mnyingdrawings shall be interpreted as illustrative and not in a limitingsense.

Having oescribed my invention, what I claim as new, and desire to secureby Letters Patent, is

1. A de ach able gas-lamp bulb comprising a sup rorting memberdetachably secured to the lower end of a gas-conduit, a mantle mountedthereon, and a globe detachably mounted upon said supporting member andadapted to be detached without affecting the relation said gas-mantleand said gasconduit, said. member, mantle and globe being ada i. ed tobe removed a unit from said conduit.

2. In a device of the class described, in combination, a gas-conduit, asupporting member detachably supported thereby, a mantle detachablymounted upon said supporting member, and a globe detachably secured. tosaid supporting member, said supporting member being free fromcoinmunication with the passage through said conduit, said member,mantle and globe being adapted to be removed as a unit from saidconduit.

3. In a device of the class described, in ccmbinaticn, a conduitterminating in a gasnczzle, a sup orting member detachably mounted. uponthe lc wer portion of said. conduit, a mantle detachably mounted uponsaid su iporting member, and a globe detacliably mounted. upcn saidsupporting member adapted to be removed without affecting the relativeposition of said mantle and said nczzlc, said conduit having an unbroken,...ssage from the point at which said supporting member is mountedthereon to and through said gas-nozzle, said member, mantle and globebeing adapted to be removed as a unit from said conduit.

4. A detachable gas-lamp bulb, com',.';ris .ing a supporting member, atranslucent globe detachably mounted directly thereto, a mantle and amantle-support, said mantlesupport being mounted directly upon saidsupporting member, said member, mantle and globe being adapted to beremoved as a unit from a conduit.

5. A gas-lighting apparatus comprising in combination, a verticalgas-conduit terminating in a nozzle, a combined. globe andmantle-support carrier having a vertically-extending central hub adaptedto be detachably secured to said conduit adjacent its termination, amantle-support mounted upon said hub and a mantle arranged to interiorlyreceive the gas issuing from said. nozzle, said carrier providing anouter portion adapted. to carry a globe, and a globe detachably securedto said portion, whereby said globe, mantle and support may be removedas a unit from said conduit.

6. In a device of the class described, in combination, a conduitterminating at its lower end in a gas-nozzle, a supporting mem berdetachably mounted upon said nozzle, a mantle-supporting member mountedupon said supporting member substantially opposite said gas-nozzle, anda translucent globe detachably mounted upon said. supporting member,said member, mantle and globe being adapted to be removed as a unit fromsaid. conduit.

7. A detachable ga -lamp bulb, comprising a supporting member having acentrally interiorly extending threaded portion, a mantle, amantle-support upon which said mantle is directly mounted, saidmantle-support being tapped upon the threaded portion of said supportingmember.

8. In a device of the class described, in combination, a conduitprovided with a gasnozzle, a supporting member having a detachableconnection about mantle, a mantle-support upon which said mantle isdirectly mounted, said mantle-sumport being adapted to be mounted uponsaid supporting member with said mantle opposite said gas-nozzle and atranslucent globe secured to said supporting member and detachable withreference thereto.

9. In a device of the class described, in combination, a conduitprovided with a gasnozzle having a threaded portion, a supporting memberprovided with an internal thread adapted to coact with the threadedportion of said gas nozzle and with an external thread, a mantle, and amantle-support having said mantle mounted directly thereon and providedwith an internal thread adapted to act with the external thread uponsaid supporting member.

said gas-nozzle, a

10. In a device of the class described, in combination, a conduitprovided with a gasnozzle having a threaded portion, a supporting memberprovided with an internal thread adapted to coact with the threadedportion of said gas-nozzle and with an external thread, a mantle, amantle support having said mantle mounted directly thereonand providedwith an internal thread adapted to act with the external thread uponsaid supporting member, said supporting member being provided with adepending portion having a thread. formed thereon and a globe providedwith means adapted to coact with said lastmentioned thread and supportsaid globe from said supporting member.

11. In a device of the class described, in combination, a supportingmember adapted to be detachably connected to a relatively fixed member,a globe detachably connected with said supporting member, one of saiddetachable connections being normally inoperative, and means adaptedsimultaneously to render inoperative the other of said detachableconnections and render said normally inoperative connection operative.

12. In a device of the class described in combination, a supportingmember adapted to be detachably connected with a relatively fixedmember, a globe detachably connected 9 with said supporting member, oneof said. detachable connections being normally inoperative and a singlemeans adapted simultaneously to lock the other of said connections, andrender operative said normally inoperative connection.

13. In a device of the class described, in combination, a supportingmember, a mantle, a mantle-support upon which said mantle is mounted,said mantle-support being mounted upon said supporting member and saidsupporting member being adapted to be detachably-connected with arelatively fixed member, a translucent globe having a detachableconnection with said supporting member, one of said detachableconnections being normally inoperative, and a single means adapted torender inoperative the other of said connections and render operativesaid normally inoperative connection.

14.. In a device of the class described, in combination, a supportingmember having means adapted to mount the same upon a relatively fixedmember and adapt the same to be detached from said fixed member by arelative turning movement, a globe mounted upon. said supporting memberadapted to be detached therefrom by a relative turning movement andmeans adapted to prevent said relative turning movement between saidsupporting member and the relatively fixed member upon which it ismounted.

15. In a device of the class described, in combination, a supportingmember, a relatively fixed member, means adapted to mount saidsupporting member upon said relal tively fixed member and adapt the sameto 3 be detached from said fixed member by a 1 relative turningmovement, a globe mounted upon said supporting member and adapted 1 tobe detached therefrom by a relative turn- 3 ing movement, and releasablemeans adapted to prevent said turning movement be- I tween saidsupporting member and the relal tively fixed memb er up on which it ismounted.

16. In a device of the class described, in combination, a supportingmember adapted l to be mounted upon a relatively fixed member, meansadapted to release said supporting member from said fixed member upon arelative turning movement taking place in one direction and meansadapted positively to lock said supporting member against movement inany direction and arranged to be brought into engagement With saidmember upon the same being turned in the opposite direction.

17. In a device of the class described, in combination, a fixed member,a supporting member adapted to be mounted thereon, means adapted torelease said supporting, member from said fixed member upon being iturned in one direction with reference to said I fixed member, meansadapted, upon being I turned in another direction, positively to locksaid supporting member against movement in any direction, a globemounted upon said supporting member and means adapted to render saidglobe detachable therefrom upon said supporting member being locked. l

18. In a device of the class described, in combination, a fixed member,a supporting member adapted to be mounted thereon, means adapted torelease said supporting member from said fixed member upon being turnedin one direction with reference to said fixed member, means adapted,upon being turned in the opposite direction with refer ence to saidfixed member, positively to lock said supporting member against movementin any direction, a translucent globe mounted upon said supportingmember, means adapted to render said translucent globe detachable withreference to said supporting member upon the latter member being looked,a gas-nozzle formed upon said fixed member, a mantle and amantle-support upon which said mantle is mounted, adapted l to bedetachably connected with said supporting member and hold said mantle inoperative relation to said gas-nozzle. l

19. In a device of the class described, in combination, a conduit, asupporting member mounted thereon and adapted to be re leased therefromby a relative turning movement, spring-pressed means adapted in oplerative position to lock said supporting member against said turningmovement and a translucent globe mounted upon said supporting member andadapted to be detached therefrom by a relative turning movement.

20. In a device of the class described, in

combination, a conduit terminating in a gasnozzle having a threadedportion, a supporting member mounted upon said threaded portion andadapted to be detached therefrom by a relative turning movement, aspring-pressed latch mounted in fixed relation to said conduit adaptedto engage and lock said supporting member against movement in anydirection, a mantle, a mantlesupport upon which said mantle is mounted,

said. mantle-support being detachably mounted upon said supportingmember about said gas-nozzle with said mantle in operative relation tosaid gas-nozzle, and a translucent globe mounted upon said supportingmember adapted to be detached therefrom by a relative turning movement.

21. In a device of the class described, in combination, a conduitterminating in a gasnozzle having a threaded portion, a supportingmember mounted upon said threaded portion and adapted to be detachedtherefrom by a relative turning movement, a spring-pressed latch mountedin fixed relation to said conduit adapted to engage and lock saidsupporting member against movement in any direction, a mantle, amantlesupport upon which said mantle is mounted, said mantle-supportbeing detachably mounted upon said supporting member about saidgas-nozzle with said mantle in operative relation to said gas-nozzle, aglobe and a threaded band fixed upon said globe adapted to coact with athreaded portion formed upon said supporting member.

22. In a gas-lighting apparatus, a combined globe and mantle-supportcomprising a tubular inner member having its end exteriorly andinteriorly threaded, and an outer portion terminating in adownwardly-turned threaded rim adapted to carry a globe.

23. In a gas-lighting apparatus, an inverted burner having an exteriorlythreaded lower end, and a combined globe and mantlesupport comprising atubular inner member having interiorly-disposed threads adapting thesame for attachment to said burner end,

and having exteriorly disposed threads adapted to detachably carry amantle and an outer annular member adapted to carry a globe.

In testimony whereof I affix my signature in the presence of twowitnesses.

CHARLES M. LUNGREN. WVitnesses:

A. C. MOORE, G. H. \VARFIELD.

TIO

